The MBR table before: 
and after: 
Now the drive is recognized in diskmgmt.msc 
and File Explorer 
and back usable again!
TestDisk well analyzed the disk
Writing this new structure to the previous MBR table has solved the issue discussed in this blog!
diskmgmt.msc reflected this : 
and File Explorer.
Deleted next the partitions and created one new simple volume and MBR table 
…
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